闪电代写 -代写CS作业_CS代写_Finance代写_Economic代写_Statistics代写_代码代做_IT代写_加急帮助

Hello, dear friend, you can consult us at any time if you have any questions, add WeChat: daixieit

Canvas Quiz 2 / CHEM 203 Fall 2022

You may want to study some and try these under test conditions. Then look up the answers or work with a classmate before inputting answers on Canvas but do not ask the LA’s or TA for assistance specifically with these problems but you can ask questions about OYO or ACE problems that are similar.

For many of these you may want to make a model to confirm your answer.

1. What is the most likely starting alkene that resulted in these products?

Unknown alkene

Br2

CHCl3

D. At least two choices would give the product mixture shown

2. What is the most likely starting alkene that would result in these products?

Unknown alkene

Br2

H2O

OH Br

+ possibly a stereoisomer

(will ask in the next problem)

D. At least two choices would give the product shown

3. In the previous problem what would the other stereoisomer be?

A. OH

D. None of the above

E. Choices A & B

F. Choices B & C

4. The data for mixed diatomic halogens reacting with alkenes is sparse and comparing the data I did find, there does not seem to be a consistent trend. For BrCl though, evidence shows that you get good selectivity for the bromine at the more substituted carbon of the double bond. In contrast, ICl forms a 50/50 mixture, and IF forms compounds with fluorine at the more substituted carbon.

If the following reaction is accurate which is the most reasonable claim for this reaction?

Br Cl

CH2Cl2

A. A chloronium ion is formed because when the 冗-bond attacks BrCl the better leaving group bromide is expelled. B. A bromonium ion is produced because Cl is more electronegative thus make Br more electropositive and more attractive for 冗-bond attack.

5. Which bonds are staggered gauche to the axial methoxy group when looking down the C5-C6 bond?

OCH3

5 6 1